1230222021 has 32 divisors (see below), whose sum is σ = 1943900160. Its totient is φ = 677121984.

The previous prime is 1230221977. The next prime is 1230222031. The reversal of 1230222021 is 1202220321.

It is a happy number.

It is not a de Polignac number, because 1230222021 - 2⁶ = 1230221957 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230222031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 279786 + ... + 284148.

It is an arithmetic number, because the mean of its divisors is an integer number (60746880).

Almost surely, 2^1230222021 is an apocalyptic number.

It is an amenable number.

1230222021 is a deficient number, since it is larger than the sum of its proper divisors (713678139).

1230222021 is a wasteful number, since it uses less digits than its factorization.

1230222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4865.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1230222021 is about 35074.5209660802. The cubic root of 1230222021 is about 1071.5057326042.

Adding to 1230222021 its reverse (1202220321), we get a palindrome (2432442342).

The spelling of 1230222021 in words is "one billion, two hundred thirty million, two hundred twenty-two thousand, twenty-one".